| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 9a: 20°F to 25°F Zone 9b: 25°F to 30°F |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 9a: 20°F to 25°F Zone 9b: 25°F to 30°F |
| 1990 Hardiness Zone: | Zone 9a: 20F to 25F |
| Average First Frost Date: | Nov. 1 - Nov. 10 |
| Average Last Frost Date: | Apr. 11 - Apr. 20 |
| Koppen-Geiger Climate Zone: | Csb - Warm-Summer Mediterranean Climate |
| Ecoregion: | |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 95470 - Redwood Valley, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 35 | 38 | 39 | 41 | 45 | 50 | 53 | 53 | 50 | 44 | 39 | 35 | 44 |
| Avg Max Temp (°F) | 56 | 59 | 63 | 68 | 75 | 83 | 91 | 90 | 86 | 76 | 62 | 56 | 72 |
| Avg Precip (In.) | 8.22 | 7.16 | 5.92 | 2.34 | 1.2 | .29 | .06 | .13 | .63 | 2 | 5.33 | 6.25 | 39.51 |